# Licensing in Astera

### Single license key model

The license key provided to you contains information about how many Astera clients can connect to a single server as well as the functionality available to the connected clients.

{% hint style="info" %}
**Note**: You cannot use your existing set of keys (from version 6 or 7). If you are planning to migrate from version 7 (or earlier) to version 8, 9 or 10, please contact [sales@astera.com](mailto:sales%40astera.com), as you will need a new license key.
{% endhint %}

### Unlocking Astera using your license key

After you have configured the server, and logged in with the admin credentials, the last step is to insert your license key.

1. Go to *Server > Configure > Step 4: Enter License Key*.

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2. On the License Management window, click on *Unlock using a key.*

<figure><img src="https://3083465318-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsR50Wa7EwZGlmPSAMkkf%2Fuploads%2FbhHPOVFH9m68QYAc668e%2F2.png?alt=media&#x26;token=c1b7ceb3-9bda-4be0-96aa-a3d67cbf32ee" alt=""><figcaption></figcaption></figure>

3. Enter the details to unlock Astera – Name, Organization, and Product Key and select *Unlock.*

<figure><img src="https://3083465318-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsR50Wa7EwZGlmPSAMkkf%2Fuploads%2Fr3nTuPFHVEUWufF4y4Ag%2F3.png?alt=media&#x26;token=1602f154-8097-41b2-824c-661affeda8a0" alt=""><figcaption></figcaption></figure>

4. You’ll be shown the message that your license has been successfully activated.

<figure><img src="https://3083465318-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsR50Wa7EwZGlmPSAMkkf%2Fuploads%2F2oewArMOfBzTLIO903Bc%2F4.png?alt=media&#x26;token=8398f504-4cc8-4ef7-a6eb-86a6b492d54c" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
**Note:** The connected client applications will shut down for the server license to take effect.
{% endhint %}

<figure><img src="https://3083465318-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsR50Wa7EwZGlmPSAMkkf%2Fuploads%2FhHLFVtREzGBCYKCsgDsI%2F5.png?alt=media&#x26;token=ece9671f-f1a3-4e3a-93bc-d8ca470eb9ba" alt=""><figcaption></figcaption></figure>

Your client is now activated. To check your license status, you can go to *Tools > Manage Server License*.

<figure><img src="https://3083465318-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsR50Wa7EwZGlmPSAMkkf%2Fuploads%2FHJe4ZjKZ5MfJD6FiBLEZ%2F6.png?alt=media&#x26;token=012840e5-1a3e-4d49-ba81-de1ea8c8b174" alt=""><figcaption></figcaption></figure>

This opens a window containing information about your license.

<figure><img src="https://3083465318-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsR50Wa7EwZGlmPSAMkkf%2Fuploads%2Fkcse48BuoLyN2Qjd3QZw%2F7.png?alt=media&#x26;token=b5c2ac3d-1b2e-4670-9635-c17dc965a991" alt=""><figcaption></figcaption></figure>

This concludes unlocking Astera client and server applications using a single licensing key.